Swan Valley-Goshen Concrete Box Culvert at Granite CreekCX(s) Applied: B1.3Date: 08/24/2011Location(s): Bonneville County, IdahoOffice(s): Bonneville Power Administration
Office of NEPA Policy and Compliance
August 24, 2011
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CX(s) Applied: B1.3
Date: 08/24/2011
Location(s): Bonneville County, Idaho
Office(s): Bonneville Power Administration
This project will include the removal of an existing structurally deficient wood bridge and replacing it with a precast concrete box culvert. The new structure will be a 12-foot (span) by 6-foot (rise) by 30-foot (long) box culvert with associated wing walls. The base footprint dimensions of the road crossing will be 42-foot wide by 14-foot long. The driving surface of the roadway will consist of a single 14-foot wide lane. Backfill will be compacted around the structure to lines and grade of the road prism including wing walls. Rip rap and fish rock will be placed around inlet, outlet, and invert as required and shown on the drawings.